* {
    padding: 0;
    margin: 0;
}
h2 {
    margin-bottom: 20px;
}
#container {
    width: 500px;
    text-align: center;
    margin: 0 auto;
    font-family: "微软雅黑";
    margin-top: 50px;
}
.selectContainer {
    position: relative;
}
.selectInput {
    width: 200px;
    height: 25px;
    border-style: none;
    border: 1px solid #999;
    border-radius: 3px;
    padding: 0 3px;
}
.picture_click {
    background: url(img/select-default.png) no-repeat;
    opacity: 1;
    width: 15px;
    height: 8px;
    position: absolute;
    top: 10px;
    right: 125px;
}
.picture_click:hover {
    background-image: url(img/select-hover.png);
}
.selectList {
    width: 206px;
    height: 212px;
    overflow-y: scroll;
    text-align: left;
    margin: 0 172px;
    border: 1px solid #999;
    display: none;
    position: relative;
}
.selectList div {
    cursor: pointer;
}
